| 挤扩支盘桩与DX桩承力盘挤扩机理对比研究 |
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| 引用本文： | 李薇薇,李从昀.挤扩支盘桩与DX桩承力盘挤扩机理对比研究[J].岩土工程技术,2009,23(2):100-105. |
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| 作者姓名： | 李薇薇 李从昀 |
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| 作者单位： | 1. 天津电力设计院,天津,300200
2. 北京电力设计院,北京,100055 |
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| 摘 要： | 挤扩支盘桩与DX桩是从普通的灌注桩衍生而来的一种新桩型，与普通混凝土灌注桩相比，单桩竖向承载力、单方混凝土承载能力都有显著提高，具有良好的社会与经济效益。通过对两种挤扩设备（单向挤压设备和双向挤压设备）的挤扩原理分析对比，说明双向挤压设备形成的支盘其承载性能明显好于单向挤压设备所形成的支盘。在对两种挤扩设备挤压土体形成支盘的过程及运动机理分析的基础上，给出了确定承力盘轮廓线的方法，并推导出承力盘体积的计算公式，为其承载力计算提供依据。
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| 关 键 词： | 挤扩支盘桩 DX桩 承力盘 挤压设备 |
Extruding Mechanism Comparative Study of Squeezed Branches and plates Pile and DX Pile |
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| Li Weiwei,Li Congyun.Extruding Mechanism Comparative Study of Squeezed Branches and plates Pile and DX Pile[J].Geotechnical Engineering Technique,2009,23(2):100-105. |
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| Authors: | Li Weiwei Li Congyun |
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| Institution: | Li Weiwei, Li Congyun (1. Tianjin Power Design Institute, Tianjin 300200 ; 2. Beijing Power Design Institute, Beijing 100055, China) |
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| Abstract: | Squeezed branches and plates pile and DX squeezed pile are new types of pile developed from normal bored pile. Compared with normal bored pile, its ability to afford the load of individual vertically and unit consumption of concrete is apparently higher and its social and economical profit is obvious. First, It conducts a comparative study of two extruding devices （one-way extruding device and two-way extruding device）, and concludes that the bearing capacity of branches and plates formed through two-way extruding device is much better than that of branches and plates formed through one-way extruding device. After analyzing the process of plates being formed through two kinds of equipments, a method is provided to draw the outline of two types of dishes respectively, and deduces the formula of dish volume which affords the load. |
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| Keywords: | squeezed branches and plates pile DX pile dish which afford the load extruding device |
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